#define _CRT_SECURE_NO_WARNINGS 1

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <stdbool.h>

//typedef char SDT;
//
//typedef struct Stack
//{
//	SDT* a;
//	int top;
//	int capacity;
//}Stack;
//
//void StackInit(Stack* pst);
//
//void StackDestroy(Stack* pst);
//
//void StackPush(Stack* pst, SDT x);
//
//void StackPop(Stack* pst);
//
//bool StackEmpty(Stack* pst);
//
//int StackSize(Stack* pst);
//
//SDT StackTop(Stack* pst);
//
//void StackInit(Stack* pst)
//{
//	assert(pst);
//
//	pst->a = (SDT*)malloc(sizeof(SDT) * 4);
//	pst->top = 0;
//	pst->capacity = 4;
//}
//
//void StackDestroy(Stack* pst)
//{
//	assert(pst);
//
//	free(pst->a);
//	pst->a = NULL;
//	pst->top = 0;
//	pst->capacity = 0;
//}
//
//void StackPush(Stack* pst, SDT x)
//{
//	assert(pst);
//
//	if (pst->top == pst->capacity)
//	{
//		int newcapacity = pst->capacity * 2;
//		SDT* newa = (SDT*)realloc(pst->a, sizeof(SDT) * newcapacity);
//		if (newa == NULL)
//		{
//			perror("realloc fail");
//			return;
//		}
//		pst->a = newa;
//		pst->capacity = newcapacity;
//	}
//	pst->a[pst->top] = x;
//	pst->top++;
//}
//
//void StackPop(Stack* pst)
//{
//	assert(pst);
//	assert(!StackEmpty(pst));
//
//	pst->top--;
//}
//
//bool StackEmpty(Stack* pst)
//{
//	assert(pst);
//
//	return pst->top == 0;
//}
//
//int StackSize(Stack* pst)
//{
//	assert(pst);
//
//	return pst->top;
//}
//
//SDT StackTop(Stack* pst)
//{
//	assert(pst);
//
//	return pst->a[pst->top - 1];
//}
//
//bool isValid(char* s)
//{
//	Stack sk;
//	StackInit(&sk);
//
//	while (*s)
//	{
//		if (*s == '(' || *s == '[' || *s == '{')
//		{
//			StackPush(&sk, *s);
//		}
//		else
//		{
//			if (StackEmpty(&sk))
//			{
//				StackDestroy(&sk);
//				return false;
//			}
//
//			char top = StackTop(&sk);
//			StackPop(&sk);
//			if ((*s == ')' && top != '(') || (*s == ']' && top != '[') || (*s == '}' && top != '{'))
//			{
//				StackDestroy(&sk);
//				return false;
//			}
//		}
//		s++;
//	}
//
//	bool ret = StackEmpty(&sk);
//
//	StackDestroy(&sk);
//
//	return ret;
//}
//
//int main()
//{
//	char* s = "[([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([([()])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])])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//	bool ret = isValid(s);
//	return 0;
//}


//int main()
//{
//	int sum = 0;
//	int val = 0;
//	while (scanf("%d", &val))
//	{
//		sum += val;
//	}
//	printf("%d", sum);
//
//	return 0;
//}